Suburban NT.2OSE User's Information Manual

USER'S

INFORMATION

MANUAL

For

Models

NT.12SE

.

NT.16SE

.

NT.2OSE

This book contains

instructions

for operating and

maintaining the

furnace.

Keep with unit

at all times.

Should

you

require

further

information, contact

your

dealer or nearest Suburban

Service

Center.

WARNING!

lnstallation

of this

appliance

must

be

made

in accordance

with

the

written instructions

provided

in

this

manual. No agent,

representative or

employee of

Suburban

or

other

person

has the authority

to change,

modify

or

waive

any

provision

of the

instructions

contained in this

manual.

WARNING! Be sure

the

furnace and all

ignition

systems

are

"OFF"

during

any

type of refueling

and

while

vehicle

is in

motion

or being

towed.

WARNING!

lmproper

installation,

adjustment,

alteration,

service

or

maintenance can cause

property

damage,

personal

injury or loss of

life. Refer to the

installation

instructions and/or owners

manual

provided

with

this

appliance.

SUBURBAN

MANUFACTURING

COMPANY

Post Office

Box 399

Dayton,

Tennessee 37321

Due to high temperatures,

the unit should

be located out

of traffic

and

away from

furniture and draperies.

Ghildren

and adults

should be alerted

to

the hazards

of high

surface

temperatures

and should

stay away

to avoid

burns or clothing

ignition.

Young

children

should

be carefully

supervised

when they

are in the

same

room

as the

unit.

Clothing or other

flammable

material should

not be

placed

on or

near the

unit.

Any safety screen

or

guard

removed

for servicing the

unit must

be

replaced

prior

to operating

the unit.

The area

around

the unit must

be kept

clear from combustible

materials,

gasoline

and

other Ilammable

vapors and

liquids.

lnstallation and repairs

should be

done by a

qualified

service

person.

The unit should be inspected

before

use and

at least annually

by a

qualified

service

person.

More frequent

cleaning

may be required

due to

excessive lint from carpeting,

bedding

material,

etc. lt is

imperative that

control compartments,

burners,

and

circulating

air

passageways

of

the

unit be kept clean.

Suburban

Manufacturing

Company

a subsidiary

or

AIRXCEL'

lnc.

\-.

\-

WARNING:

lf the

information

in this

manual is

not followed

exactly,

a

fire or

explosion

may result

causing

property

damage,

personal

injury

or loss of

life.

-

Do not store

or use

gasoline

or other

flammable

vapors and

liquids

in the

vicinity of this

or any

other appliance.

-

WHAT

TO DO IF

YOU SMELL

GAS

.

Extinguish any open

flame.

.

Evacuate all

persons

from the

vehicle.

.

Shut

off the

gas

supply

at

the

gas

container

or source.

.

Do not touch

any electrical

switch,

or

use any

phone

or

radio

in the

vehicle.

.

Do

not

start

the

vehicle's

engine

or

electric

generator.

.

Gontact

the

nearest

gas

supplier

or

qualified

service

technician

for

repairs.

.

lf

you

cannot

reach

a

gas

supplier

or

qualified

service

technician,

contact

the

nearest

fi re department.

.

Do not turn

on the

gas

supply

until

the

gas

leak(s)

has been

repaired.

-

lnstallation

and

service

must be

performed

by a

qualified

installer,

service

agency

or the

gas

supplier.

Form

No.2465-C

MAINTENANCE

AND CLEANING

and/or

the

production of

carbon

mr'r:lxide

exists

ri!:,lh

can cause

hare^n.l iniirrv nronerlv demaoe or lgss

of life.

!-ARNING!

It the

:er

rl

ll

I applianc;

iails

io

maintain

it in ihe

condition

in which

it was shipped

irom the

lactory or

it the appliance

is

not usia

sotety

tor

its

intenddd

purpose

or

if

appliance

is.not

maintained

in accordancswith

the

instructiona

in

thi!

"nanual,

thcn

the risk of a

fire

CAUTION:

Label all

wires

belore

disconnecting

for

servicing'

Proper

oolaritv must be

observed

so the

furnace

molor

will

run with the

proper

Eiri"ri6n of

rotation

to

insure

correct

air delivery.

(See

wiring diagram)'

CAUTION:

Label all

wires

prior

to

disconnection

when servicing.controls'

Wiring erro,

can

cause

improper

and dangerous

lurnace operation'

Always

verily

proper

operation

ot

turnace

after

servicing'

Your

lurnace

should

be

inspected

by a

qualitied

service

agency

yearly

riJror6irriiing

rhe

lurnace

oir.

Partictilar

attention

should

be

given

to the

tollowing

items.

1 . lnsoect furnace

installation

and

vent termination

lo be sure

Iurnace

is

properly

ii,.iiiio

li.,,

pir6J (SLe lnstallation

lnstructions)'

that

vent terminates

to lhe

ii,iorpt"i.fino'inat

vent

tubes

overlap

properly

(See

Installing

Vent

Assembly).

2. lnsDect

chamber

and

venting

to assure

that

these

components

are

physically

siu.Ol

*,tnort

nolei or

exceJsive

corrosion

and that

the

installation

and/or

ie-iniiif

f

aiion

is in accordance

with Suburban's

lnstallation

lnstructions.

(Reference

installation

manual

supplied

with

furnace.)

WARNING!

lt is

imperative

that

the

products

ol

combustion

be

properly

vented to

atmosptiere

and

that

all

combustion

air supplied

to burner

be

drawn

trom outside

atmosPhere'

3. Check

the

base

on

which

furnace

is mounted.

Be sure

it

is

physically

sound'

void of any

sagging,

deterioration,

etc.

4.

lnsoect

furnace,

the

venting

and

the

gas piping

to

furnace

for

obvious

signs

of det6rioration.

Correct

any

defects

at once

5- lnsDect combustion

chamber

lor restrictions

in exhaust

or

intake

ll is

irojiStiue that the

flow

of

intake combustion

air

and the

flow

of

exhaust

gases

u"Ino

"ioltt"a

to the

outside

atmosphere

not

be

obstructed

Any soot or

loose

debr"is

should

be

blown

out

using

compressed

air.

6.

lnsoect

all

qaskets.

lf any

gaskets

show

signs ol

leakage or

deterioration,

idptaiE tt

L..

Biie operation

o-f

the

furnace

depends

on

all

gaskets

being

tight'

7. lnspect

return

air

inlet openings

to

the

furnace.

Bemove

any

restrictions

to

assure

adequate

air

flow.

You, as

the owner/user,

should

inspect

the

furnace

monthly during

the

heaiino season

for

oresence

of

soot

oh

vent. Operating

the

furnace

under

this

lJnJiii6n

corto

ieid'io serious

property

damage.

persohal iniury or

loss ot

life

itiooi

is ouser"d

on the

vent,

imriedihtely

shut

the

furnace down

and contact

a

qualified

service

agencY.

Listedbelowareseveralsafetyrelateditemsthatyoushouldfol|owduringthe

heating season

to

assure

continued

safe

operation

ol

the

furnace'

1 . lnsDect

furnace

venting.

Venting

must be

free of obstructions,

void of soot

and

propeily

terminated

to

the

atmosphere.

WARNING!

Do

not install

screens

over

the

vent

lor

any

reason' Screens

*iri

riliorei""tricted

and

cause

unsafe

furnace

operation'

Accessories

marketed

tor RV

products which

we do

not recommend.

For

v. onlv

factory

authorized

parts

are

to be

used on

your

tqnace'

afe

2. Periodically observe

the

main burner

flame to assure

it is burning

with a

hard

blue

flame with

well

defined

burner

ports (See

Figure

2). lf flame appears

yellow

or burner

has a

lazy flame, shut

furnace down.

lt is

possible

that burner

needs

cleaning or

replaced.

To inspect the

ntain burner,

remove the

four

(4)

screws-(A,

B,

C and

D) s'ecuring

the burner

access door to

the combustion

chamber

(See

Figure 1). li excessi-ve

rust and corrosion

are

present

on burner

surface,

the

bu-rner

must

be thoroughly

cleaned or

replaced.

The burner

may

be

cleaned

using

a

steel

wire

brusl-iand

blown

clean using

high

compression

air. Contact

a

qualifled

service

person

for assislance.

NOTE: To

observe

flame, cabinet

fronl

must

be

removed.

Operation

o{ burner

can

then be€bserved

through

the

viewing window

on

front

of chamber.

(See

Figure 1.)

3.

Periodically

inspect the

vent

for

obstructions

or

presence

ol soot.

Soot

is

formed when6ver iombustion

is incomplete.

This

is

your

visual warning that the

furnace

is

operating

in an unsale

manner.

l{ soot

is

present,

immediately shut

Iurnace down

and contact

your

dealer

or a

qualilied

service

person

4.

Keep furnace clean.

More

frequent cleaning

may

be

required

due

to excessive

lint from carpeting.

bedding

material, eta.

lt

is imperative that

control

compartments,

buriers

and ciiculating

air

passageways

of the appliance

be

kept

clean.

5.

The motor is

permanently

lubricated and

requires no oiling

6.

Keep

the

furnace area

clear

of any combustible

materials,

gasoline

or

other

llammable

vapor and

liquids.

7.

Before

operating

furnace, check

the

location of the

lurnace

vent to

make

sure

it will not be bloclied

by the

opening

of any door

on the trailer.

lf it

can

be

blocked, do

not operate

the

lurnace

with

the

door open.

8.

Do

not restrict the

flow of combustion

air

or the

warm air circulation

10 the

furnace. To do so could

cause

personal

injury and/or

death.

9.

Never ooerate the

furnace if

you

smell

gas.

Do not assume

that the smell

of

oas

in

your

RV

is normal.

Any

ttme

you

detect

the odor

of

gas.

it is to be

donsidered

life

threatening

and corrected

immediately.

Extinguish any open

tlames including cigarettes

and

evacuate

all

persons

from

the

vehicle. Shut

off

gas

supply at

LF

gas

bottle.

(See

safety

notice on

front

cover

of this

manual

)

10.

lmmediately shut

furnace down and

call a

service agency

i, furnace cycles

erratically or delays

on

ignition.

WARNING! Should

overheating

occur,

or the

gas

supply

fail to shut

off,

shut

ofl the

manual

gas

valve to

the appliance

before

shutting

oft the

electrical

11. Never attempt to

repair damaged

parts.

Always

have

them

replaced by a

qualif

ied service agency.

12. Never attempt

to

repair the

furnace

yourself.

Seek

the

help ol a

qualilied

service

person.

13.

Clothing

or other

flammable

material should

not be

placed

on or

near the

appliance.

14. Always follow the

Operating

Instructions.

Do

not

deviate

from the step-by-

step

procedures.

1 5. ln any

installation

in which the

vent ol

this appliance

can be

covered due

to

the consiruction o,

the

R',/ or some

special

feature of the

RV

such

as slide

out,

ooo-uo etc. alwavs

insu'e that

the apoliance

cannot

be operated

by setting

the

indrmbstat to

thd

positive'OFF'poiiiion and

shutting

off all

electrrcal

and

gas

supply

to the appliance.

Never

operate

furnace

with

vent

covered.

16. When considering

add-on

rooms,

porch

or

patio,

attention

must

be

given

to

the

venting

of

your

luinace.

For

your

safety,

do

not terminate

furnace vent

inside

add-on

ro6ms, screen

porch

oionto

patibs.

Doing

so

will result

in

products

of

combustion

being

vented

into the

room or occupred

areas.

HIGH

YELLDV

BLUE FLAME

BURNER

CIRRECT

INCT]RRECT

FLAME

Figure

2

CEI.,IBUSTION CHAMBER

BURNTR

DBSERVATI!N

V]NDOV

CABINTT

ELECTRDDE

VALVE

GAS

T]TTING

BURNER

ACCESS DEDR

SPARK

V]RE

Figure

1

OPERATI

NG INSTRUCTIONS

WARNING: Do not operate furnace while

vehicle is in motion

or beino towed.

NOTE: During initial firing of this furnace a burn-off

of excess

paint

and oils remaining from manufacturing

process

may

cause

"smoking"

for 5

-

'10

minutes.

FOR YOUR SAFEW READ BEFORE

OPERATING

- -

ARNING:

lf

you

do

not

follow these instructions

exactly,

a

fire

or

explosion

may result causing

property

damage,

personal

injury

or loss of

life.

A" This appliance does

not have a

pilot.

lt is

equipped

with an ignition device

which automatically lights the

burner. Do not light the burner by hand.

B. BEFORE

OPERATING

smell

all around

the

appliance

area for

gas.

Be sure

to smell next to the floor because

some

gas

is heavier than air and will settle

on the floor.

WHAT TO DO IF YOU SMELL

GAS

.

Extinguish any open flame.

.

Evacuate all

persons

from lhe

vehicle.

.

Shut off

the

gas

supply

at the

gas

container or source.

.

Do not touch any electric

switch or use any

phone

or radio in the vehicle.

.

Do not start the vehicle's engine or electric

generator.

.

Contact

the

nearest

gas

supplier

or

qualified

service technician

for

repairs.

.

lf

you

cannot reach

a

gas

supplier or

qualified

service technician,

contact

the

nearest flre

department.

.

Do nct turn

on the

gas

supply until the

gas

leak(s) has

been repaired.

C. Use only

your

hand

lo turn the handle

cn

the

manual

shut offvalve. Never

use

tools. lf the

handle will not turn

by hand, don't try to

repair it, call

a

qualified

service

technician. Force

or attempted repair may

result in

a

fire

or explosion.

D. Do

not use this appfiance if

any

part

has been under

water. lmmediately

call

aqualified service

technician to inspect the

appliance

and to replace

any

part

of the

control system and any

gas

control which has

been under

watei.

'

OPERATING INSTRUCTIONS

\-"

1. STOP!

Read the

safety

information

above on this label.

2. Set the

thermostat

to

lowest setting.

3. Turn off all electric

power

to the appliance.

4. The appliance is equipped

with an

ignition

device

which

automatically lights

the burner. Do not try to light

the burner by hand.

5. Turn shut-off valve to

"OFF".

This furnace

is

equipped wrth a valve

shut-off

switch.

With

switch

in

"OFF"

position, gas

will not flow

to burner nor will the

furnace operate.

6. Wait flve

(5)

minutes to clear

out any

gas.

Then smell for

gas

including

near

the floor. lf

you

then smell

gas,

STOP!

Follow

"B"

in the safety information

above

on

this label. lf

you

don't smell

gas, go

to

7.

Turn on all electric

power

to the appliance. These

units are for

use with LP

gas

only. LP

gas

is heavier then air. Therefore,

to better

clear out any

gas,

the heater

should be operated

for five

(5)

minutes with the

blower

on and the

gas

off.

8. Turn

shut-off valve to

"ON".

9.

Set

thermostat

to desired setting.

10. lf the appliance

will not operate, follow the instructions

"To

Turn

Off

Gas

to

Appliance"

and call

your

service technician or

gas

supplier. NOTE:

lf the

furnace should lock-out,

the blower will

go

off in

5 minutes

and remain off

until

unit

is

reset by reactivating thermostat.

TO

TURN OFF GAS TO APPLIANCE

1.

Set

the thermostat to

lowest

setting, then move lever to

"OFF"

position.

3. Turn

shut-off valve to

"OFF".

Do not force.

2.

Turn off all electric

power

to

the appliance if service is to

be

performed.

v,

v

@'

2

\

35

37i

39\l

\ 1.,

,v'

('r,.-.1

1B

-

L'-.L's

40.

Figure

3

43

,

3

S

,tt

)4

Figure

4

Figure 5

n

t

REPLACEMENT

PARTS LIST

Models

NT.12SE

.

NT-16SE

.

NT-2OSE

Only

factory

authorized

parts

are to be used.

Do

not attempt to repair defective

parts.

When

ordering

repair

parts

from

your

dealer,

a

Suburban Service Center,

or distributor,

always

give

the following

information.

1. Part

Number

(Not

ltem No.)

2. Part

Description

3.

Model

No., Serial No. and

Date Code

of

Furnace

4. Number

of

Parts Required

Y.,

Item

No.

1

2

4

5

6

7

I

o

10

10A

11

1'1A

12

14

17

1B

19

20

21

214

22

24

28

29

30

31

34

35

36

38

40

41

42

43

44

45

46

47

48

50

5'r

54

56

57

58

59

60

61

62

63

64

65

Part Number

NT.12SE

NT.16SE

NT.2OSE

161154

16115/

121224

121520

030785P8

030785SG

030785GL

101887

'101887

10',1887

070569

050712

050712 050712

05071

1 05071 1

05071 1

050708

260098

121853

062476

121247

230933

121364

121364 12',t3M

120672

0208848K

1213AA 121388

121388

120158

070243

230635

230849

120158

120714

120714 120714

230714

120158

1201s8

120158

070270

121357

520820

062392

062392 062392

120158

070450

120717

120153

120158

350082

3s0082

't20158 120158 120158

3902228K

12',t329

121329 121329

070446

070446 070446

120722

3902238K

390223BK

530089 530089 530089

070448

230616

230634 230634

350083

350083 350083

062290

121407

121407 121407

231931

231931 231S31

070163

070163 070163

121388

121388 121388

120717

120717 120717

030621 030621

030621

070398

070398 070398

170374

170374 170374

't61',t23

'161123

161123

062288

062284

120158

120158 120158

170744

170744 170744

120615 120615

1206'15

180225

180224 180231

070449 070449 070449

010614 010614 010614

063249 063249 063249

232351

12015A 120158

'120158

Description

Thermostat

(Suburban

supplied

themstat not

appli€ble to some

models)

Screw, #1 0 x 3i4

(2

Required)

Screw, #8 x 3/8

(2

Required)

Cabinet

Front

(BroM)

Cabinet Front

(Gray)

Cabinet Front

(Light

Gray)

Cabinet

Bushing

Tube, lntake

(Standard) (5'Long)

Tube, lntake

(Special) (2

3/4' Long)

Tube, lntake

(Special) (7

3/4" Long)

Vent Cap and

Exhaust Tube

Asembly

Screw, #10 x 3i4

(6

Required)

Bracket, Microswitch Mounting

Screw, #2

-

56 x 5/8

(2

Required)

Microswitch Assembly

Washer Lock #2

(2

Required)

Nut, Hex #2-56

(2

Required)

Combustion

Chamber/Shield

Assembly

Screw,

#10 x'112 With Serated

Head

(2

Required)

Screw, #8 x 3/8

(2

Required)

Grcmmet

Limit Switch

Screw, rlS x

3/8

(2

Required)

Screw,

#6 x 1/4

(2

Required)

Splicer

Screw, #8 x 3i8

(2

Required)

Screw, #8 x 3/8

(2

Required)

Bushing

Screw, #6

x

5/8

(2

Required)

Module

Board

Stiffener Bracket. Combustion

Air

Housing

Screw, #8 x 3/8

(2

Required)

Gasket, Bumer Tunnel

Nut

'10-24

Hex Lock

(2

Required)

Screw, #8 x 3/8

(2

Required;

Wheel, Combustion

Air

Screw, #8 x 3/8

(9

Required)

Box, Combustion

Air

(Outside)

Assembly

Nut 10-32 Hex Lock

(2

Required)

Gasket, Combustion Air Box

Washer, Flat

(2

Required)

Box, Combustion

Air

(lnside)

Assembly

Grommet

(2

Required)

Gasket, N.4otor

Motor

lmpeller, Room Air

Bracket, CombJStion

Air Housing

Mounting

Screw,

#8

-

32 Self Tapping

(2

Required)

Electrode

Gasket, Electrode

Screw, #10 x 1/2 Serrated

Head

(4

Required)

Nut 10-24 Hex

Lock

(2

Required)

Door, Burner

Access

Gasket,

Burner Access Door

Gas Fitting

Valve

Bracket,

Manifold

N,lounting

Screw, #8 x 3/B

(2

Required)

Manifold Assembly

Screw, #8 x 1/2

(4

Required)

Orifice, Main Burner

Gasket, Manifold

Burner Assembly

Bracket, Switch, Mounting

Switch,

ON/OFF

Screw. #8 x 3/8

Y-/

6

Suburban NT.2OSE User's Information Manual

Suburban NT.2OSE User's Information Manual

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